پديد آورنده :
تيرگير، فرهنگ
عنوان :
تهيه، شناسايي و بررسي خواص بيونانو كامپوزيتهاي پلي يورتان ايميد/تيتانيوم دي اكسيد و پليمرهاي جديد فعال نوري و زيست تخريب پذير حاوي آمينواسيد تيروسين و آلانين
گرايش تحصيلي :
شيمي آلي-پليمر
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان،دانشكده شيمي
صفحه شمار :
هفده،188ص.:مصور﴿رنگي﴾،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
شادپورملك پور
استاد مشاور :
مهران غياثي
توصيفگر ها :
دي آروماتيك غير سمي , پليمرهاي فعال بيولوژيكي و فعال نوري
تاريخ نمايه سازي :
4/5/89
استاد داور :
علي اصغر انصافي،حميد جواهريان نقاش،نوري خراساني
كد ايرانداك :
ID316 دكتري
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
Preparation Characterization and Investigation of Properties of Bio nanocomposites Poly urethane imide Titanium dioxide and New Optically active and Biodegradable Polymers Derived from Tyrosine and Alanine Farhang Tirgir Tirgir 58@yahoo com Farhang 58@ch iut ac ir April 6 2010 Department of chemistry Isfahan University of Technology 84156 83111 Isfahan Iran Prof Shadpour Mallakpour E mail mallak@cc iut ac ir mallak777@yahoo com mallakpour84@alumni ufl edu Shadpour Mallakpour Abstract In this project a new derived from tyrosine N N pyromellitoyl bis L tyrosine dimethyl ester was prepared in three steps The combination of three significant properties such as thermal stability solubility and nontoxicity biodegradability and biologically active due to the presence of L tyrosine amino acid in the main chain cause which this diol can be regarded as non toxic diphenolic monomer and may be employed as replacement for the industrially used diphenols in the design of biodegradable and biological polymers Reaction of this optically and biologically active aromatic diol derived from tyrosine with diisocyanate and chiral diacids containing different amino acids lead to the formation of novel poly urethane imide PUI s and pseudo poly amino acid s with high thermal stability and biodegradable properties The chemical structure of these compounds were confirmed by elemental analysis FT IR 1H NMR and 13C NMR spectroscopy DSC and TGA thermal analysis and specific rotation In vitro toxicity and biodegradability behavior of the monomer and obtained polymers which were evaluated based on the growth of air born bacterial and fungal on culture media and soil burial degradation In addition bio nanocomposites titanium dioxide TiO2 and PUIs derived from tyrosine were prepared by capsulation method of nanoparticle titanium dioxide with surface active agent and dispersion in the polymer matrix because of improved properties such as high heat stability UV Vis absobance and photocatalysis properties of polymers via high intensity ultrasound process The PUI TiO2 bionanocomposites was characterized by Fourier transform IR spectroscopy FT IR powder X ray diffraction XRD differential scanning calorimetry DSC transmission electron microscopy TEM scanning electron microscopy SEM atomic force microscopy AFM and UV VIS spectroscopy In last step of this project bionanocomposites as suitable substrata from titanium dioxide were used for degradation of diazo dye methyl orange under UV Vis irradiation Key Words Non Toxic Aromatic Diol Tyrosine Biologically active Bio nanocomposites
استاد راهنما :
شادپورملك پور
استاد مشاور :
مهران غياثي
استاد داور :
علي اصغر انصافي،حميد جواهريان نقاش،نوري خراساني
